Try --scrypt -I 19 -g 1 -w 256 --thread-concurrency 16000 --gpu-engine 1100 --gpu-memclock 1475
no hardware errors yet, hopefully it doesn't crashspoke too soon, crashed a few minutes afterwards, i wonder if its my power supply... i don't have much in the system but its only 500w silverstone running a 7770 and the R9 270
http://abload.de/img/crashminer98aby.jpghttp://abload.de/img/crashminer98aby.jpg